JPH0213430Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a nut pivot structure in a Y-shaped jack.

[Technical background]

The lower end of the suspension link, which is shorter than the support link, is pivotally attached to the middle of the support link of a long rod with one end as the ground-contacting part, and a load receiving member that engages with the side sill of the automobile is attached to the upper end of the suspension link. This invention relates to an improvement in the structure of an operating screw rod rotatably supported near the mounting position of a member, a nut body screwed onto the operating screw rod, and a pivoting portion at the tip of the support link that pivotally supports the nut body. It is something.

[Conventional technology]

Conventional pivoting configurations between a nut body screwed onto an operating screw rod and a support link, such as that disclosed in Japanese Utility Model Application Publication No. 58-131295, generally include a female threaded hole into which the male thread of the operating screw rod can be screwed. A shaft piece is inserted from the outside into a shaft hole in which support links are drilled on both sides of the nut body that has passed through the hole, and is fixed thereto.

[The problem that the idea aims to solve]

This invention eliminates the above-mentioned method of combining separate parts such as the nut body and the shaft piece, and makes them integral from the beginning, so that the nut body and the shaft piece can be connected as a pivot without the need for a shaft stopper. The purpose of this invention is to develop a new shaft hole configuration in the support link to which the shaft is attached, and to provide a shaft and bearing configuration by fitting and inserting these.

[Means to solve the problem]

This invention, as a means to achieve the above object, is designed to provide a nut in both directions perpendicular to the axis of the female screw hole adjacent to the main part of the nut body passing through the female screw hole into which the male screw of the operating screw rod can be screwed. Provide a flange on the outside,
An annular groove with a predetermined groove width and groove depth is provided inside the flange, and the bottom of the groove is formed as an axis of the predetermined diameter, and from the outer periphery of the axis in a diametrical direction that is different from the axis of the female threaded hole. A right-angled cut is made on the vertical and horizontal sides, and a rotation recess is provided at the bottom of the cut.In addition, a support link having a grounding part at the lower end is provided near the upper end, which is the same as the shaft part of the nut body. In addition to drilling a shaft hole of the same diameter, cut out approximately 1/4 of the circumference of the shaft hole to provide an opening that contacts the outer edge of the support link, and insert this opening from the rotation recess in the shaft. A support link is constructed by establishing a dimension equivalent to the short diameter distance dimension formed by a straight line passing through the center and reaching the outer periphery of the shaft as the gap dimension between the opening edge and the narrowed part, and The lower end is pivotally connected to the longitudinal middle part of the support link, and the upper end is provided with a load receiving member, and a pivoting member capable of pivotally supporting the tip of the operating screw rod is attached near the load receiving member, and the operating screw The shaft of the nut body screwed onto the rod is fitted and inserted into the shaft hole of the support link, and the tip of the operating screw rod is pivotally connected to the pivot member.

[Effect]

The nut body into which the operating screw rod is screwed is brought into contact with the opening edge connected to the shaft hole of the support link of the shaft, which is formed in an annular groove shape, and the opening edge is connected to the right-angled notch recessed on the outer periphery of the shaft. When the narrowed parts provided at opposing positions are brought into contact with each other, and the nut body is rotated around the rounded tip of the narrowed part into the turning recess that forms the bottom of the right-angled cut, the shaft will be rotated. Move into the hole. In this way, once the shaft is housed in the shaft hole, it can be freely rotated. Thereafter, the tip of the operating screw rod screwed into the nut body is pivotally connected to a pivot member provided on the lifting link.

〔Example〕

Next, an embodiment of this invention will be described with reference to the drawings. Flanges 4, 4 are provided on the outside in both directions perpendicular to the axis of the female threaded hole 3 passing through the main part 2 of the nut body 1. Annular grooves 5, 5 having a set groove width are formed inside, and the diameter portions of the groove bottoms serve as designated shafts 6, 6.

The shafts 6, 6 have a right-angled cut 7 recessed from their outer periphery in the diametrical direction at a completely different angle from the axis of the female threaded hole 3. As shown in the third diagram, its shape consists of a vertical axis a passing through the center O, a horizontal axis b passing through the center O, a vertical side 7a and a horizontal side 7b that are parallel to each other, and the intersection of both sides. The rotating recess 7c is formed in a substantially right triangle shape with the center O oriented, and the short diameter distance l is formed by a straight line from the rotating recess 7c passing through the center O and reaching the outer periphery of the shaft 6.
is formed.

Near the upper end of the support link 20 which has a grounding part 21 at the lower end, apart from the nut body 1, draw a radius approximately the same as the radius forming the circle other than the right angle notch 7 of the shaft 6 in the nut body 1 from the center O'. A circle is bored to form the shaft hole 22, and approximately 1/4 of the circumference of the shaft hole 22 is centered on the shaft fitting direction line f passing through the center O'.
An opening 23 extending to the outer edge of the support link 20 is formed by removing the periphery, and an opening edge 25 extending from one open end 24 to the outer edge of the support link 20 is parallel to the shaft fitting direction line f. The other open end is rounded to form an acute-angled narrowed part 26 that is continuous with the outer edge of the support link 20.

In this way, the opening 23 is perpendicular to the opening edge 25, and the length of the line reaching the narrowed portion 26 is the same as the short diameter distance l of the shaft 6.

The lower end of the lifting link 30, which is shorter than the entire length of the support link 20, is rotatably pivoted to approximately the middle position in the longitudinal direction of the support link 20, and the upper end has a load receiver for receiving the side sill of the automobile. A member 32 is installed, and a pivot member 33 for rotatably pivoting the tip of the operating screw rod 40 is installed near the load receiving member 32. Further, the operating screw rod 40 is connected to the pivot member 3 of the lifting link 30.
3, the nut body 1 is screwed into the female thread 41, that is, the female screw hole 3 passing through the main part 2 of the nut body 1 is screwed into the operating screw rod 40. Then, the nut body 1 thus constructed is pivoted to the shaft hole 22 in the support link 20, and then the tip of the operating screw rod 40 is pivoted to the pivot member 33 on the lifting link 30 side. be.

[Effect of idea]

As described above, the nut body 1 that is screwed into the operating screw rod 40 is formed of a single material, including the shaft 6 that is pivotally supported on the support link 20 and the flanges 4, 4 that serve as shaft stoppers as part of the nut body 1. Therefore, the material may be metal or a molded product of fluorinated synthetic resin used as a sliding aid, and as a means of assembling these, narrow portions facing each other are connected to the outer edge of the support link 20. 23 and the opening edge 25, and can be pivoted in a fitting insertion form by rotation, unlike the conventional method. Since there is no step of implanting the shaft into the nut body in the subsequent process, the strength of the shaft is sufficiently guaranteed, and there is no risk of it coming off or deforming. Further, the shaft hole 22 has an opening 23 formed by a narrowed part 26 that continues to the outer side of the support link 20, but the operating screw rod 40
Before the fixing process, the nut body 1 is fitted with an unnatural rotation form for the operating screw rod 40, so after it is pivoted in a predetermined form as the operating screw rod 40 in the subsequent process, the nut body 1 is This has the advantage that there is absolutely no risk of it deviating from the shaft hole 22 of the support link 20.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of the Y-shaped jack, Fig. 2 is a front view of the nut body, Fig. 3 is a sectional view taken along the line of Fig. 2 and shows the shaft configuration, and Fig. 4 is an enlarged explanation of the shaft hole. It is a diagram. 1... Nut body, 2... Main part, 3... Female screw hole, 4... Flange, 5... Annular groove, 6...
Axis, 7...Right angle cut, 7a...Vertical side, 7b...Horizontal side, 7c...Turning recess, 20...Support link, 2
1...Grounding part, 22...Shaft hole, 23...Opening part,
25... Opening edge, 26... Narrowing portion, 30... Loading link, 31... Pivoting connection, 32... Load receiving member, 3
3... Pivot member, O... Center, l... Minor diameter distance, 40... Operating screw rod, 41... Male thread.

Claims (1)

[Scope of utility model registration request] Flanges 4, 4 are provided on the outside in both directions orthogonal to the axis of the female screw hole 3 adjacent to the main portion 2 of the nut body 1 passing through the female screw hole 3 into which the male screw 41 of the operating screw rod 40 can be screwed. An annular groove 5 having a predetermined groove width and groove depth is provided inside the flanges 4, 4, and the groove bottom is formed as a shaft 6 having a predetermined diameter. A right-angled cut 7 formed by a vertical side 7a and a horizontal side 7b is formed in the diametrical direction different from the axis, and a rotation recess 7c is provided at the bottom of the cut, and apart from this, a grounding part 21 is provided at the lower end. A shaft hole 22 having the same diameter as the shaft 6 of the nut body 1 is bored near the upper end of the support link 20, and approximately 1/4 of the circumference of the shaft hole 22 is cut out to form the support link 2.
An opening 23 is provided in contact with the outer edge of the shaft 6, and this opening 23 is formed by a straight line from the rotation recess 7c in the shaft 6, passing through the center O and reaching the outer periphery of the shaft 6. Opening edge 25 and narrowing part 2
The lower end of the lifting link 30, which is shorter than the entire length of the supporting link 20, is pivoted to the longitudinal middle part of the supporting link 20, and the upper end is Load receiving member 32
A pivot member 33 capable of pivotally supporting the tip of the operating screw rod 40 is attached near the load receiving member 32, and the shaft 6 of the nut body 1 screwed onto the operating screw rod 40 is inserted into the shaft hole of the support link 20. 22, and the tip of the operating screw rod 40 is pivotally connected to the pivot member 33.